package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

public class JDBCDemo3 {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        Class.forName("com.mysql.cj.jdbc.Driver");

        Connection connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root"
        );
        System.out.println("与数据库建立连接成功！");
        Statement statement = connection.createStatement();

        String sql = "UPDATE user " +
                    "SET password='666666',age=18,nickname='张三丰' " +
                    "WHERE username = '张三'";
        System.out.println(sql);
        int num = statement.executeUpdate(sql);
        System.out.println(num>0? "修改成功！":"修改失败！");
        connection.close();
    }
}
